| A | B |
|---|
| sclera | white fibrous protection of the eye globe |
| cornea | transparent horney area over iris that focuses light |
| choroid | vascular middle layer of posterior cavity |
| iris | pigmented muscular opening that adjusts light entering the eye |
| pupil | opening in center of iris |
| lens | clear body behind iris that focuses light |
| retina | dark inner nerve layer of post. cavity with vision receptors |
| aqueous humor | clear liquid in anterior cavity |
| vitreous humor | jello like clear substance in post. cavity; keeps shape of globe |
| meibomian glands | oil glands on edge of lids to hold fluid on surface of eye |
| lacrimal glands / ducts | product and drain tears |
| optic nerve | carries impulses from retina to brain |
| conjunctiva | mucous membrand lining sclera and eye lids |
| auricle / pinna | external ear that collect sound waves |
| external auditory canal / meatus | tube from external ear to ear drum |
| cerumen | earwax |
| tympanic membrane | ear drum between canal and middle ear |
| eustachian tube | between middle ear and pharynx - equalizes pressure |
| ossicles | middle ear bones that carry sound |
| middle ear bones | malleus (hammer), incus (anvil), stapes (stirrup) |
| labyrinth | inner ear of vestibule, cochlea and semicircular canals |
| cochlea | nerve endings in snail shaped organ |
| oval window | connection between middle and inner ear |
| semicircular canals | helps the body maintain balance |
| mastoid bone | behind the external auditory canal/meatus |
| vestibule | area where the middle ear connects to the inner ear through the oval window |
| oval window | where stapes connect to inner ear |
